ThinkPHP3.1迁移到PHP7

一、在PHP7中，preg_replace不能用/e修饰符，所以用preg_replace_callback代替preg_replace，
需要修改的文件包括

ThinkPHP\Lib\Template\ThinkTemplate.class.php
ThinkPHP\Lib\Core\Dispatcher.class.php
ThinkPHP\Lib\Core\Db.class.php
ThinkPHP\Lib\Behavior\CheckRouteBehavior.class.php
ThinkPHP\Extend\Mode\Lite\Dispatcher.class.php
ThinkPHP\Lib\Behavior\ReadHtmlCacheBehavior.class.php
ThinkPHP\Common\common.php

1)ThinkPHP\Lib\Template\ThinkTemplate.class.php
这个文件大约需要修改8处地方
NO1. 大约在137行，将

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$tmplContent = preg_replace(‘/<!–###literal(\d+)###–>/eis’,"\$this->restoreLiteral(‘\\1’)",$tmplContent);
替换为
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$tmplContent = preg_replace_callback(‘/<!–###literal(\d+)###–>/is’, function($r) {
return $this->restoreLiteral($r[1]);
}, $tmplContent);

NO2. 大约在168行，将
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$content = preg_replace(‘/’.$begin.’literal’.$end.'(.*?)’.$begin.’\/literal’.$end.’/eis’,"\$this->parseLiteral(‘\\1’)",$content);
替换为
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$content = preg_replace_callback(‘/’ . $begin . ‘literal’ . $end . ‘(.*?)’ . $begin . ‘\/literal’ . $end . ‘/is’, function($r) {
return $this->parseLiteral($r[1]);
}, $content);

NO3. 大约在197行，将
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$content = preg_replace(‘/(‘.$this->config[‘tmpl_begin’].’)([^\d\s’.$this->config[‘tmpl_begin’].$this->config[‘tmpl_end’].’].+?)(‘.$this->config[‘tmpl_end’].’)/eis’,"\$this->parseTag(‘\\2’)",$content);
替换为
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$content = preg_replace_callback(‘/(‘ . $this->config[‘tmpl_begin’] . ‘)([^\d\s’ . $this->config[‘tmpl_begin’] . $this->config[‘tmpl_end’] . ‘].+?)(‘ . $this->config[‘tmpl_end’] . ‘)/is’, function($r) {
return $this->parseTag($r[2]);
}, $content);

NO4. 大约在266行，将
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preg_replace(‘/’.$begin.’block\sname=(.+?)\s*?’.$end.'(.*?)’.$begin.’\/block’.$end.’/eis’,"\$this->parseBlock(‘\\1′,’\\2’)",$content);
替换为
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preg_replace_callback(‘/’ . $begin . ‘block\sname=(.+?)\s*?’ . $end . ‘(.*?)’ . $begin . ‘\/block’ . $end . ‘/is’, function ($r) {
$this->parseBlock($r[1], $r[2]);
}, $content);

NO5. 大约在271行，将
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$content = preg_replace(‘/’.$begin.’block\sname=(.+?)\s*?’.$end.'(.*?)’.$begin.’\/block’.$end.’/eis’,"\$this->replaceBlock(‘\\1′,’\\2’)",$content);
替换为
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$content = preg_replace_callback(‘/’ . $begin . ‘block\sname=(.+?)\s*?’ . $end . ‘(.*?)’ . $begin . ‘\/block’ . $end . ‘/is’, function ($r) {
return $this->replaceBlock($r[1], $r[2]);
}, $content);

NO6. 大约在273行，将
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$content = preg_replace(‘/’.$begin.’block\sname=(.+?)\s*?’.$end.'(.*?)’.$begin.’\/block’.$end.’/eis’,"stripslashes(‘\\2’)",$content);
替换为
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$content = preg_replace_callback(‘/’ . $begin . ‘block\sname=(.+?)\s*?’ . $end . ‘(.*?)’ . $begin . ‘\/block’ . $end . ‘/is’, function ($r) {
return stripslashes($r[2]);
}, $content);

NO7和NO8,这两处是连在一起的 大约在396行，改成如下：
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if (!$closeTag){
$patterns = ‘/’.$begin.$parseTag.$n1.’\/(\s*?)’.$end.’/is’;
$replacement = "\$this->parseXmlTag(‘$tagLib’,’$tag’,’$1′,”)";
$content = preg_replace_callback($patterns, function($r) use($tagLib, $tag) {
return $this->parseXmlTag($tagLib, $tag, $r[1], ”);
},$content);
}else{
$patterns = ‘/’.$begin.$parseTag.$n1.$end.'(.*?)’.$begin.’\/’.$parseTag.'(\s*?)’.$end.’/is’;
$replacement = "\$this->parseXmlTag(‘$tagLib’,’$tag’,’$1′,’$2′)";
for($i=0;$i<$level;$i++)
$content = preg_replace_callback($patterns, function($r) use($tagLib, $tag) {
return $this->parseXmlTag($tagLib, $tag, $r[1], $r[2]);
},$content);
}

2)ThinkPHP\Lib\Core\Dispatcher.class.php
大约132行,将
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preg_replace(‘@(\w+)\/([^\/]+)@e’, ‘$var[\’\\1\’]=strip_tags(\’\\2\’);’, implode(‘/’,$paths));
改为
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preg_replace_callback(‘@(\w+)\/([^\/]+)@’,function($r) use (&$var){
$var[$r[‘1’]] = strip_tags($r[2]);
},implode(‘/’,$paths));

3)ThinkPHP\Lib\Core\Db.class.php
大约605行,将
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$joinStr = preg_replace("/__([A-Z_-]+)__/esU",C("DB_PREFIX").".strtolower(‘$1’)",$joinStr);
改为
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$DB_PREFIX = C("DB_PREFIX");
$joinStr = preg_replace_callback("/__([A-Z_-]+)__/sU",function ($r) use($DB_PREFIX) {
return $DB_PREFIX.".strtolower({$r[1]})";
},$joinStr);

4)ThinkPHP\Lib\Behavior\CheckRouteBehavior.class.php
这个文件需要修改的地方共4处
NO1. 大约151行,将
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$url = preg_replace(‘/:(\d+)/e’,’$values[\\1-1]’,$url);
改为
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$url = preg_replace_callback(‘/:(\d+)/’,function($r) use (&$values){
return $values[$r[1]-1];
},$url);
NO2. 大约168行,将
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preg_replace(‘@(\w+)\/([^\/]+)@e’, ‘$var[strtolower(\’\\1\’)]=strip_tags(\’\\2\’);’, implode(‘/’,$paths));
改为
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preg_replace_callback(‘@(\w+)\/([^\/]+)@’,function($r) use (&$var){
$var[strtolower($r[‘1’])] = strip_tags($r[2]);
},implode(‘/’,$paths));

NO3. 大约191行,将
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$url = preg_replace(‘/:(\d+)/e’,’$matches[\\1]’,$url);
改为
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$url = preg_replace_callback(‘/:(\d+)/’, function($r) use (&$matches) {
return $matches[$r[1]];
},$url);

NO4. 大约201行,将
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preg_replace(‘@(\w+)\/([^,\/]+)@e’, ‘$var[strtolower(\’\\1\’)]=strip_tags(\’\\2\’);’, $regx);
改为
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preg_replace_callback(‘@(\w+)\/([^,\/]+)@’,function($r) use (&$var){
$var[strtolower($r[‘1’])] = strip_tags($r[2]);
},$regx);

5)ThinkPHP\Extend\Mode\Lite\Dispatcher.class.php
大约65行,将
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$res = preg_replace(‘@(\w+)’.$depr.'([^’.$depr.’\/]+)@e’, ‘$var[\’\\1\’]="\\2";’, implode($depr,$paths));
改为
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preg_replace_callback(‘@(\w+)’.$depr.'([^’.$depr.’\/]+)@’,function($r) use (&$var){
$var[$r[‘1’]] = $r[2];
},implode($depr,$paths));
6)ThinkPHP\Lib\Behavior\ReadHtmlCacheBehavior.class.php
大约65行处的一个if判断替换为：

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if(!empty($html)) {
// 解读静态规则
$rule = $html[0];
// 以$_开头的系统变量
//$rule = preg_replace(‘/{\$(_\w+)\.(\w+)\|(\w+)}/e’,"\\3(\$\\1[‘\\2’])",$rule);
$rule = preg_replace_callback(‘/{\$(_\w+)\.(\w+)\|(\w+)}/’,function($r){
$system = "$r[3](\${$r[1]}[‘$r[2]’])";
eval( "\$system = $system ;" );
return $system;
},$rule);
//$rule = preg_replace(‘/{\$(_\w+)\.(\w+)}/e’,"\$\\1[‘\\2’]",$rule);
$rule = preg_replace_callback(‘/{\$(_\w+)\.(\w+)}/’,function($r){
$system = "\${$r[1]}[‘$r[2]’]";
eval( "\$system = $system ;" );
return $system;
},$rule);
// {ID|FUN} GET变量的简写
//$rule = preg_replace(‘/{(\w+)\|(\w+)}/e’,"\\2(\$_GET[‘\\1’])",$rule);
$rule = preg_replace_callback(‘/{(\w+)\|(\w+)}/’,function($r){
return $r[2]($_GET[$r[1]]);
},$rule);
//$rule = preg_replace(‘/{(\w+)}/e’,"\$_GET[‘\\1’]",$rule);
$rule = preg_replace_callback(‘/{(\w+)}/’,function($r){
return $_GET[$r[1]];
},$rule);
// 特殊系统变量
$rule = str_ireplace(
array(‘{:app}’,'{:module}’,'{:action}’,'{:group}’),
array(APP_NAME,MODULE_NAME,ACTION_NAME,defined(‘GROUP_NAME’)?GROUP_NAME:”),
$rule);
// {|FUN} 单独使用函数
//$rule = preg_replace(‘/{\|(\w+)}/e’,"\\1()",$rule);
$rule = preg_replace_callback(‘/{\|(\w+)}/’,function($r){
return $r[1]();
},$rule);
if(!empty($html[2])) $rule = $html[2]($rule); // 应用附加函数
$cacheTime = isset($html[1])?$html[1]:C(‘HTML_CACHE_TIME’); // 缓存有效期
// 当前缓存文件
define(‘HTML_FILE_NAME’,HTML_PATH . $rule.C(‘HTML_FILE_SUFFIX’));
return $cacheTime;
}
7)ThinkPHP\Common\common.php

大约217行,将
return ucfirst(preg_replace("/_([a-zA-Z])/e", "strtoupper(‘\\1’)", $name));

改为
$str = preg_replace_callback(‘/_([a-zA-Z])/’, function($r) {
return strtoupper($r[1]);
}, $name);

return ucfirst($str);

二、如果有用到验证码，请把ThinkPHP\Extend\Library\ORG\Util目录下的String.class.php复制一份放在一起，并改名为Stringnew.class.php

打开Stringnew.class.php
把所有的String::替换为Stringnew::

并把类名Class String 改为 Class Stringnew
打开ThinkPHP\Extend\Library\ORG\Util\Image.class.php，把所有的

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import(‘ORG.Util.String’);
替换成

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import(‘ORG.Util.Stringnew’);
三、自定义函数的参数最好给定默认值，如果自定义函数规定了参数，但是没有指定默认值，在外部调用的时候，如果传参的时候少传值了，那么运行会报错！

这样，在PHP7下就能运行ThinkPHP3.1了。